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ISL5216 Datasheet(PDF) 1 Page - Intersil Corporation |
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ISL5216 Datasheet(HTML) 1 Page - Intersil Corporation |
1 / 65 page 1 TM FN6013.1 ISL5216 Four-Channel Programmable Digital DownConverter The ISL5216 Quad Programmable Digital DownConverter (QPDC) is designed for high dynamic range applications such as cellular basestations where multiple channel processing is required in a small physical space. The QPDC combines into a single package a set of four channels which include: digital mixers, a quadrature carrier NCO, digital filters, a resampling filter, a Cartesian-to-polar coordinate converter and an AGC loop. The ISL5216 accepts four channels of 16-bit fixed or up to 14-bit mantissa / 3-bit exponent floating point real or complex digitized IF samples which are mixed with local quadrature sinusoids. Each channel carrier NCO frequency is set independently by the microprocessor. The output of the mixers are filtered with a CIC and FIR filters, with a variety of decimation options. Gain adjustment is provided on the filtered signal. The digital AGC provides a gain adjust range of up to 96dB with programmable thresholds and slew rates. A cartesian to polar coordinate converter provides magnitude and phase outputs. A frequency discriminator is also provided to allow FM demodulation. Selectable outputs include I samples, Q samples, Magnitude, Phase, Frequency and AGC gain. The output resolution is selectable from 4-bit fixed point to 32-bit floating point. Output bandwidths in excess of 1 MHz are achievable using a single channel. Wider bandwidths are available by cascading or polyphasing multiple channels. Features • Up to 95MSPS Input •Four Independently Programmable Downconverter Channels in a single package •Four Parallel 17-Bit Inputs providing 16-bit fixed or one of several 17-bit floating point formats • 32-Bit Programmable Carrier NCO with > 115dB SFDR • 110dB FIR Out of Band Attenuation • Decimation from 4 to >65536 • 24-bit Internal Data Path • Digital AGC with up to 96dB of Gain Range • Filter Functions - 1- to 5-Stage CIC Filter - Halfband Decimation and Interpolation FIR Filtering - Programmable FIR Filtering - Resampling FIR Filtering • Cascadable Filtering for Additional Bandwidth •Four Independent Serial Outputs • 2.5V Core, 3.3V I/O Operation Applications • Narrow-Band TDMA through IS-95 CDMA Digital Software Radio and Basestation Receivers • Wide-Band Applications: W-CDMA and UMTS Digital Software Radio and Basestation Receivers Ordering Information PART NUMBER TEMP RANGE (oC) PACKAGE PKG. NO ISL5216KI -40 to 85 196 Ld 0.8 mm BGA V196.12x12 ISL5216KI-1 -40 to 85 196 Ld 1.0 mm BGA V196.15x15 Data Sheet February 2002 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2002. All Rights Reserved |
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